My son and I watched all of them yesterday. Aside from Spark, there is no necessary order, or none that I could tell, since the episodes aren't numbered. Sadly there doesn't seem to be much of a story arc crossing all of the episodes so far.

One of the things I really enjoy is seeing the tie fighters from the original trilogy. They get a lot of play in these episodes.

The characters are all likable, which is an improvement over the CloneWars preachy ObiWan and broody Anakin. Lots of potential here. The art is also really good, with the exception of the wookies, which look like Gumby.